It'd skip once or twice, then never do it for the next 5 minutes.Īfter about 5 hours of being on, one of my guests showed me that the game crashed. Noticed that the ship started to "Skip" from place to place, rather than move smoothly through space, seemingly at random. Got a friend grabbing me a few Z80A's out of his parts bin, so I'll post again on how the new CPU changes anything. Went back to where I was and switched 1A and 4A again, got ROM 7 error. Pulled all 3 Z80A's (1A 4A 1N) and switched them up one (1A>1N, 1N>4A, 4A>1A) and got it to boot with a ROM 6 error. +10.3 Unregulated was floating about +12.8, which is normal.Ĭhecked both frequency testpoints, checked out, so the crystals were running.ĭid a pull-and-clean of many suspect IC's and reseated, no change. Cleaned this up some, I'll fix it permanently later. Someone hacked the harness to jump ground onto wires soldered onto the ground planes. Ground fingers burned on the CPU and Video board. This is the Atari board, not the Namco one. Booted to a garbled, non-moving rug screen. I changed #4 back to the bootleg and it plays fine, but the logo still says XEVIOS.So, picked up a Xevious today, owner just wanted it gone. I used the NAMCO images for ROMs 4, 5, 7 and 12, but the game gets stuck in diagnostics mode- RAM OK, ROM OK, SOUND 0.F, and a display of the DIP switch settings. 11 of the ROMs are identical, 2 have a few differences,Ģ have a lot of differences, 2 have the same data but the bytes are bit-swapped,Īnd 2 are unique to this boardset and aren't part of the original set. I'm currently working on getting the original ROMs to play on it, and ROM They are connected together by a 50-pin ribbon cable, and a couple of power wires.
The lower board is taller, has 10 more EPROMs, a bunch more 6116s, 4 6148s, and a 6-pin connector that has RGB, sync and 2 grounds.
All 4 Z80s are on this board, along with 9 EPROMs, 2 6116 SRAMs, an 8255 and two 8-position DIP switches. The top board is pretty much square, with the 44-pin main connector (not the same as Xevious). Sparkle across the top of the logo goes too far- as if the u were still there. Software-wise, it is identical to Xevious, except for aĬouple of patches- the copyright is different (Watson 1980), the first hidden message isĭifferent ("DEAD COPY MAKING copy under NAMCO program"- I don't understand it!), and the Xevious logo was obviously hacked to Xevios- even the I got one of those bootleg Xevious boards. Sean Riddle's Home Page - Xevious Xevious
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